Eight other pipelines currently run below Lake Oahe. In fact, existing pipelines have safely transported natural gas beneath Lake Oahe for more than 30 years. Built in 1982, the existing non-DAPL owned dual 42-inch pipelines are about five feet below the mud floor of Lake Oahe; the Dakota Access Pipeline will be installed about 95 to 115 feet below the bottom of Lake Oahe.
No part of the pipeline comes in contact with water from the Missouri River or Lake Oahe.
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